Compact Power Splitters with Mosaic-based Structure Designed by Bayesian Direct-binary-search Method. - Takuya Mitarai; Takeshi Fujisawa; Takuya Okimoto; Naoya Kono; Naoki Fujiwara; Yusuke Sawada; Taichi Muratsubaki; Takanori Sato; Kunimasa Saitoh; Hideki Yagi (OECC/PSC, 2022)